Quantitative estimates of orbital and millennial scale climatic variability in central Mexico during the last ∼40,000 years

Caballero, Margarita; Lozano‐García, Socorro; Ortega‐Guerrero, Beatriz; Correa‐Metrio, Alexander

doi:10.1016/j.quascirev.2018.12.002

Cited by 49 publications

(53 citation statements)

References 82 publications

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“…The Mexican Transition Zone is characterized by an impressive biological and physical complexity in terms of biogeographical and macroecological patterns (Morrone, 2010; Ríos‐Muñoz & Navarro‐Sigüenza, 2012; Sosa, Ornelas, Ramírez‐Barahona, & Gándara, 2016), geological evolution (De Cserna, 1989; Ferrari, Orozco‐Esquivel, Manea, & Manea, 2012), and paleoclimatic dynamics (Caballero, Lozano‐García, Ortega‐Guerrero, & Correa‐Metrio, 2019; Caballero‐Rodríguez et al, 2018). Therefore, the study of the evolution of the biota in the Mexican Transition Zone requires the consideration of both biotic and abiotic factors, as the phylogeographic approaches do.…”

Section: Introductionmentioning

confidence: 99%

High genetic diversity and stable Pleistocene distributional ranges in the widespread Mexican red oakQuercus castaneaNée (1801) (Fagaceae)

Peñaloza‐Ramírez

Rodríguez‐Correa

González‐Rodríguez³

et al. 2020

Ecology and Evolution

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The Mexican highlands are areas of high biological complexity where taxa of Nearctic and Neotropical origin and different population histories are found. To gain a more detailed view of the evolution of the biota in these regions, it is necessary to evaluate the effects of historical tectonic and climate events on species. Here, we analyzed the phylogeographic structure, historical demographic processes, and the contemporary period, Last Glacial Maximum (LGM) and Last Interglacial (LIG) ecological niche models of Quercus castanea, to infer the historical population dynamics of this oak distributed in the Mexican highlands. A total of 36 populations of Q. castanea were genotyped with seven chloroplast microsatellite loci in four recognized biogeographic provinces of Mexico: the Sierra Madre Occidental (western mountain range), the Central Plateau, the Trans‐Mexican Volcanic Belt (TMVB, mountain range crossing central Mexico from west to east) and the Sierra Madre del Sur (SMS, southern mountain range). We obtained standard statistics of genetic diversity and structure and tested for signals of historical demographic expansions. A total of 90 haplotypes were identified, and 29 of these haplotypes were restricted to single populations. The within‐population genetic diversity was high (mean hS = 0.72), and among‐population genetic differentiation showed a strong phylogeographic structure (NST = 0.630 > GST = 0.266; p < .001). Signals of demographic expansion were identified in the TMVB and the SMS. The ecological niche models suggested a considerable percentage of stable distribution area for the species during the LGM and connectivity between the TMVB and the SMS. High genetic diversity, strong phylogeographic structure, and ecological niche models suggest in situ permanence of Q. castanea populations with large effective population sizes. The complex geological and climatic histories of the TMVB help to explain the origin and maintenance of a large proportion of the genetic diversity in this oak species.

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Section: Introductionmentioning

confidence: 99%

High genetic diversity and stable Pleistocene distributional ranges in the widespread Mexican red oakQuercus castaneaNée (1801) (Fagaceae)

Peñaloza‐Ramírez

Rodríguez‐Correa

González‐Rodríguez³

et al. 2020

Ecology and Evolution

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“…), along with distributional and compositional vegetation changes such as a shift of the upper limit of the Quercus forest from 3050 m to ~2150 m a.s.l. During the Terminal Glacial (15-12 kyr), retreating glaciers indicated warmer and humid conditions, if compared with the previous and later periods (Caballero et al, 2019).…”

Section: Discussionmentioning

confidence: 93%

“…The Mexican mountains are considered as a biodiversity hotspot for temperate taxa (Mittermeier et al, 2005; Myers et al, 2000; Ramamoorthy et al, 1993; Sosa and Loera, 2017). The few available studies on this area suggest that central Mexico was substantially cooler during the Last Glacial Maximum (LGM) than today, with downward displacement of at least 1000 m of the snowline (Vázquez-Selem, 2011; Vázquez-Selem and Heine, 2011; Vázquez-Selem and Lachniet, 2017) and montane vegetation (Bryson et al, 2011; Caballero et al, 2010; McDonald, 1993), and a drop of 4.5–4.8°C in mean annual temperature based on the transfer function results using pollen and diatom assemblages from lake Chalco (Caballero et al, 2019; Correa-Metrio et al, 2013). Other studies suggest a cooling off as much as 8°C (Caballero et al, 2010; Hodell et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Past and future sky-island dynamics of tropical mountains: A model for twoGeotrupes(Coleoptera: Geotrupidae) species in Oaxaca, Mexico

et al. 2020

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Recent collecting and taxonomic studies of dung beetles of the genus Geotrupes Latreille (Coleoptera: Geotrupidae) in the mountains of Oaxaca have evidenced the existence of a vicariant speciation pattern, where one species occupies the northern mountain system and the other one the southern mountain range. A study of this possible vicariant speciation mechanism is presented using a paleobiogeographic mapping analysis of both Geotrupes species distribution during Late Quaternary glaciation events. Based on these paleomaps a possible speciation mechanism (vicariant speciation) is suggested, in which one common ancestor (mother species) lived at the bottom of the Valle de Oaxaca (Oaxaca Valley) during the last local glacial maximum (LLGM, 21-17.5 kyr) and whose possible continuous distribution was broken into two (or more) separated areas on mountaintops as the climate became warmer toward the present. We propose that the fragmentation and isolation of habitats may have promoted genetic differentiation of populations resulting in vicariant speciation, as suggested by a sky-island dynamic process. The example of a possible effect of the Little Ice Age in the mountains of Oaxaca is also discussed. Finally, a projection is made into the XXII century, based on climatic modeling predictions. These last results suggest the possible disappearance of the sky-island dynamic process through the accelerated speed of climatic change.

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“…High TOC and low P values point to dominantly anoxic bottom water and eutrophic conditions in the lake during the deposition of Unit 2, as anoxic sediment accumulation can explain better preservation of organic matter while favouring P removal from the sediments (Hupfer and Lewandowski, 2008). In eutrophic lakes, high oxygen demand can lead to anoxic bottom water conditions, as is the case in modern Alberca de Tacámbaro, with a nearly permanent deep water anoxia (Caballero et al 2019). Generally moister conditions are suggested by lower Ca/Ti between 5.0 and 2.0 ka, punctuated by peaks in CaCO 3 % at 4.2 and 3.9 ka that mark decade-scale periods of higher evaporation, drier conditions, and probably lower lake levels, which intensifies after 2.0 ka.…”

Section: Palaeoclimatic Implicationsmentioning

confidence: 95%

“…Metcalfe et al, 2015), explain the drier conditions between 9.0 and 6.5 ka recorded in Alberca de Tacámbaro. Dry conditions have been recorded in lake sediment sequences from central and central western parts of Mexico during the Early Holocene (Chalco-Xochimilco (Caballero et al, 2019;Ortega-Guerrero et al, 2018), Lerma (Caballero et al 2002), Zirahuén (Torres-Rodríguez et al, 2012). In some of these records, hiatuses between Late Glacial to Middle Holocene (10-5 ka) have been reported A-E).…”

Section: Palaeoclimatic Implicationsmentioning

confidence: 99%

The Holocene record of Alberca de Tacámbaro, a tropical lake in western Mexico: evidence of orbital and millennial‐scale climatic variability

Ortega‐Guerrero

Caballero

Israde-Alcántara

2021

J Quaternary Science

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Laminated sediments in a core from Alberca de Tacámbaro, western central Mexico, provide a high‐resolution record of palaeoclimatic variability for most of the Holocene. Using compositional and textural characteristics we identified 14 facies classified in biogenic, clastic and volcaniclastic groups, in which diatoms and other algal remains are the most common components. In addition to facies analysis, high‐resolution geochemical data from continuous core scanning XRF and the analysis of discrete samples for organic and inorganic carbon content, provide the basis for palaeoclimatic reconstruction. The age model indicates that the record spans from 9.4 cal ka bp toad 1760. Three main phases in the sequence are identified, controlled by millennial‐scale variability. During the period between 9.4 and 5.7 cal kabp, the lake is dominated by siliceous organisms. Drier conditions between 8.2 and 6.3 cal kabp are linked to decreases in summer insolation and solar irradiance. By 5.7 cal kabp, the change in sedimentation is related to the increase in El Niño Southern Oscillation frequency. Evidence of the occurrence of dry conditions during the archaeological Late Classic period (ad 600–900) and historical droughts are also documented in the Alberca de Tacámbaro record. Unprecedented changes in the landscape are recorded afterad 1520.

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Quantitative estimates of orbital and millennial scale climatic variability in central Mexico during the last ∼40,000 years

Cited by 49 publications

References 82 publications

High genetic diversity and stable Pleistocene distributional ranges in the widespread Mexican red oakQuercus castaneaNée (1801) (Fagaceae)

High genetic diversity and stable Pleistocene distributional ranges in the widespread Mexican red oakQuercus castaneaNée (1801) (Fagaceae)

Past and future sky-island dynamics of tropical mountains: A model for twoGeotrupes(Coleoptera: Geotrupidae) species in Oaxaca, Mexico

The Holocene record of Alberca de Tacámbaro, a tropical lake in western Mexico: evidence of orbital and millennial‐scale climatic variability

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